Bridge dynamic load automatic detection and inversion system and method

Abstract

The invention discloses a bridge dynamic load automatic detection and inversion system and method. The system comprises a three-dimensional laser scanner (11), a computer, a plurality of cameras (12)and a timer used in cooperation with the three-dimensional laser scanner (11). A plurality of road rods are uniformly distributed on a same-direction lane on the bridge; the cameras (12) for coveringthe view field of a lane area between two adjacent road rods are erected on all road rods, the plurality of cameras are used for synchronously shooting, the synchronization precision is less than 10 microseconds, the three-dimensional laser scanner (11) is erected right above two lanes in the same direction at the entrance of a bridge, and the measurement range covers the two lanes; a stress sensor is at least arranged at the maximum stress position of the bridge (21), and the stress sensor, the cameras (12), the timer and the three-dimensional laser scanner (11) are all connected with a computer. According to the method, dynamic load detection of the bridge and accurate monitoring of strain of each part of the bridge are realized.

Description

technical field [0001] The invention belongs to the technical field of bridge dynamic load detection, and in particular relates to a bridge dynamic load automatic detection and inversion system and method. Background technique [0002] Bridges are an important part of roads. Due to reasons such as unreasonable bridge structure, natural disasters or overloading, bridge collapse accidents often occur, which bring great property losses to the country and the people. Therefore, in order to avoid similar accidents, many new bridges or bridges in use are required to install bridge monitoring systems. The current bridge monitoring mostly stays in the regular detection of bridge fixed points, or uses surveillance video to monitor the traffic flow on the bridge deck, or embeds load cells to monitor the load of a single section, and does not really realize the dynamic load tracking or stress monitoring of the entire bridge deck. [0003] Meanwhile, the existing system vehicle monito...

AI Technical Summary

Problems solved by technology

The current bridge monitoring mostly stays in the regular detection of fixed-point parts of the bridge, or uses surveillance video to monitor the traffic flow on the bridge deck, or embeds weighing sensors to monitor the load of a single section, and does not really realize the tracking or stress monitoring of the entire bridge deck dynamic load.

[0003] At the same time, the existing system vehicle monitoring and strain measurement are two isolated systems

At the same time, there is no video-based full-bridge vehicle tracking system. The most important thing is that multiple videos cannot be synchronized, and the current monitoring systems are independent, and there is no function to distinguish between heavy and empty vehicles.

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